tdepim/akregator/src/treenodevisitor.h

/*
    This file is part of Akregator.

    Copyright (C) 2005 Frank Osterfeld <frank.osterfeld at kdemail.net>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

    As a special exception, permission is given to link this program
    with any edition of TQt, and distribute the resulting executable,
    without including the source code for TQt in the source distribution.
*/
#ifndef AKREGATOR_TREENODEVISITOR_H
#define AKREGATOR_TREENODEVISITOR_H

namespace Akregator 
{

class TreeNode;
class Folder;
class Feed;
class TagNode;
class TagFolder;

class TreeNodeVisitor
{
    public:
        virtual bool visit(TreeNode* node);
        virtual bool visitTreeNode(TreeNode* /*node*/) { return false; }
        virtual bool visitFolder(Folder* /*node*/) { return false; }
        virtual bool visitTagFolder(TagFolder* /*node*/) { return false; }
        virtual bool visitFeed(Feed* /*node*/) { return false; }
        virtual bool visitTagNode(TagNode* /*node*/) { return false; }
};

}

#endif